Table 1.
Cohort descriptors.
Fig 1.
Correlation between Insomnia Severity Index and Geriatric Depression Scale.
The figure shows a moderate positive correlation between ISI scores and Geriatric Depression Scale (r = 0.34, P-value < .001) in all participants (n = 119).
Fig 2.
Correlation between Insomnia Severity Index scores and cortical thickness.
Correlation between ISI scores and cortical thickness in all participants (n = 120). Only regions with P-value < .001 (uncorrected FWE) are shown. All multivariate linear regression models were adjusted for age, sex, handiness and scan type. Correlation coefficients are expressed as a color scale, indicating an increasing strength of the correlation from red to yellow.
Fig 3.
Correlation between Insomnia Severity Index scores and cortical thickness adjusting by Geriatric Depression Scale.
Correlation between ISI scores and cortical thickness in all participants (n = 119). Only regions with P-value < .001 (uncorrected FWE) are shown. All multivariate linear regression models were adjusted for age, sex, handiness and scan type and Geriatric Depression Scale. Correlation coefficients are expressed as a color scale, indicating an increasing strength of the correlation from red to yellow.
Fig 4.
Correlation between Putamen volumes and Insomnia Severity Index.
Scatter plot showing the correlation of the normalized volumes of right and left putamen with ISI scores (n = 120).
Table 2.
Effect of subcortical regional volumes to ISI scores.